Convert MOV to MKV Online
Create MKV files from MOV sources with a free online converter. The conversion runs on the server, batches are supported, and the server limit is 100 MB per file. Keep the original file while you review the converted copy. The tool works without a plugin or extension.
Convert .MOV to .MKV
Select a file to begin. Processing details and limits are listed below.
How to convert MOV to MKV
- 1
Choose MOV files
Add one or more MOV files to the queue. The uploader keeps batch items separate.
- 2
Set the MKV options
Set the available quality or format options, or keep the defaults for a first pass.
- 3
Convert and download
Run the queue and download the MKV files individually or together as a ZIP.
QuickTime movie vs Matroska video
| Spec | QuickTime movie | Matroska video |
|---|---|---|
| MIME type | video/quicktime | video/x-matroska |
| Format type | video | video |
| Standard | QuickTime File Format | Matroska specification |
| First release | 1991 | 2002 |
| Browser support | Partial; depends on browser and codec | Limited; most browsers do not play MKV natively |
| Contents | QuickTime container with video, audio, timecode, and metadata. Common payloads include H.264, ProRes, AAC, and PCM. | Extensible container for video, audio, subtitles, chapters, and attachments. Common payloads include H.264, H.265, VP9, AV1, AAC, Opus, and FLAC. |
About QuickTime movie
Deep Apple ecosystem support, professional codecs such as ProRes, and flexible track structure. Not as universally playable as MP4; Windows, Linux, and browser support depends on codecs and third-party software.
Format referenceAbout Matroska video
Open container, excellent subtitle and chapter support, and the ability to hold almost any codec. Hardware and browser support is less consistent than MP4; some mobile and smart-TV apps cannot open it.
Format referenceWhy convert MOV to MKV?
- Keep the MOV master while using the MKV copy as the everyday delivery version.
- The result can be tested on the target device before a larger batch is processed.
- Sharing becomes simpler when the recipient does not need a specialist media player.
- The conversion can reduce playback friction when the original codec or container is not supported.
Will quality change?
The video is re-encoded into MKV, so this is not a bit-for-bit copy. Resolution, bitrate, and codec support affect the final quality. The original source remains the best reference for comparison.
Processing and limits
- Processing
- Server-side
- Engine
- FFmpeg
- Maximum size
- 100 MB per file on the server.
- Batch support
- Yes, multiple files can be queued; completed results can be downloaded as a ZIP.
- Quality controls
- Options can adjust output dimensions, audio bitrate.
The file is processed on the server because the conversion requires a server-side engine or a utility operation.
- Hardware and browser support is less consistent than MP4; some mobile and smart-TV apps cannot open it.
- The output is re-encoded, so keep the original source as the archive copy.
- Browser-first paths depend on local codec support; unsupported cases fall back to the server.
Platform compatibility
The output format is supported by limited; most browsers do not play mkv natively. Desktop and mobile compatibility still depends on the specific application, so test critical files.
When not to convert
- Skip the conversion when the destination already accepts MOV and no compatibility problem exists.
- For a one-off preview, a local viewer may be faster than creating a new delivery file.
- If MKV support is uncertain on the destination device, test a sample before processing a large batch.
Frequently asked questions
- Can I convert MOV to MKV without installing software?
- Upload a MOV file, choose the available MKV options, run the conversion, and download the result. The tool is free, supports batches, and accepts server uploads up to 100 MB.
- Does Convert MOV to MKV require an account?
- It is free, requires no account, and adds no watermark. Server uploads are limited to 100 MB per file, and browser-first paths are limited by device memory.
- Will quality change?
- The video is re-encoded into MKV, so this is not a bit-for-bit copy. Resolution, bitrate, and codec support affect the final quality. The original source remains the best reference for comparison.
- Where is the file processed?
- Yes. This conversion uses a server-side engine, so the file is uploaded over HTTPS, processed in an isolated request, and removed after the result is produced.
- Can I convert several files at once?
- Queue multiple files, run them together, and download the finished results as a ZIP. Each server file is limited to 100 MB, and large batches may take longer.
- What can go wrong?
- Open the downloaded MKV file in the application or database you plan to use, check the structure against the source, and keep the original until the output is approved.